TRENCH F

Tritium- and DU-contaminated glove boxes; dueling; stainless steel; 6 each 55-gallon poly drums containing MFP-conlaminated spent demineralizer resin; wooden shipping crates; steel cladding and zirconium insulation; dilute nitric acid neutralized with CaCC)3, Na2COa, and NaHCOa and solidified with yellow powder material; Electro-gio electropolishing agent solution with concentrated phosphoric acid neutralized with NagGOs and NaOH and solidified with yellow powder material; lab benches; metal table; 2 each glove boxes; HEPA and prefilters. There are 5 MFP-contaminated, nuclear fuel-shipping casks of various sizes in Trench F. They include the Hallam cask, the Helicopter cask, the IF-100 cask, the IF-200 cask, and the Yankee cask. These casks were subject to various destructive tests in the mid-1970s to meet regulatory certification requirements for shipping spent nuclear fuel assemblies. These casks, soon to be retired, were removed from active service for destructive testing. The casks were equipped with non-radioactive fuel mock-ups for destructive testing. The Hallum Nuclear Power Facility provided the Hallum cask to SNL for torch fire tests. The Hallum cask is 19 ft long x 3 ft in diameter and weighs 40 tons. The cask consists of two stainless steel cylinders separated by 8.5 inches of lead shielding in the annulus. Pratt and Whitney provided the Helicopter cask for drop tests from 2,000 ft above ground surface. The Helicopter cask is a pot-type cask weighing 3 tons. The interior cavity is 4 inches in diameter and 17.5 inches high surrounded by 10 inches of lead. Westinghouse provided the Yankee cask and its Atlas railcar for sled-track impact tests. The Yankee cask is 13 ft long x 5 ft in diameter and weighs 37 tons. The cask consists of two stainless steel cylinders separated by 8.5 inches of lead shielding in the annulus. General Electric provided the IF-100 and IF-200 casks for sled-track impact tests. The IF-100 cask is 13 ft long x 32 inches in diameter and weighs 22 tons. The cask consists of two stainless steel cylinders separated by 8.5 inches of lead shielding in the annulus. The IF-200 cask is 13 ft long x 3 ft in diameter weighing 25 tons. The cask consists of two stainless steel cylinders separated by 8.5 inches of lead shielding in the annulus.

A semi-trailer or "carriage" used for transporting nuclear fuel-shipping casks is buried in Trench F. The trailer is contaminated with Cs-137. The trailer was contaminated by a leaking shipping cask that contained a spent nuclear fuel assembly destined for TA-5. The cask that contained the spent fuel assembly leaked water during shipment. The cask was decontaminated and returned to Savannah River via another trailer; however, the contaminated trailer was designated non-recoverable and was buried.

792 ft sq. of TA-5 routine operational and miscellaneous decontamination waste.